نتایج جستجو برای: visual acuity

تعداد نتایج: 363021  

Journal: :Transactions of the American Ophthalmological Society 2001
Anjali S Hawkins Janet P Szlyk Ziba Ardickas Kenneth R Alexander Jacob T Wilensky

BACKGROUND Despite their normal or near-normal Snellen visual acuity, patients with glaucoma often complain of "poor" vision. OBJECTIVE To investigate the relationship between large-letter contrast sensitivity, high-contrast visual acuity, and visual field defects in patients with glaucoma who have 20/40 or better visual acuity. DESIGN Prospective, cross-sectional case series. PATIENTS AN...

Journal: :Archives of ophthalmology 2000
C L Shields J A Shields J Cater K Gündüz C Miyamoto B Micaily L W Brady

OBJECTIVE To identify clinical predictive factors for visual outcome in a large series of patients who underwent plaque radiotherapy for uveal melanoma. DESIGN Clinical factors, including patient data, tumor features, and radiation variables, were analyzed for their impact on visual acuity using Cox proportional hazards regression models. PARTICIPANTS Patients with uveal melanoma and initia...

2013
Yoshimitsu Kohmura Shigeki Murakami Kazuhiro Aoki

The purpose of this study was to clarify the effect of colored lenses on visual attributes related to sports activities. The subjects were 24 students (11 females, 13 males; average age 21.0 ±1.2 years) attending a sports university. Lenses of 5 colors were used: colorless, light yellow, dark yellow, light gray, and dark gray. For each lens, measurements were performed in a fixed order: contras...

Journal: :بینا 0
علیرضا برادران رفیعی ar baradaran-rafii تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم مهرداد اخلاق پسند m akhlaghpasand تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم محمد پاکروان m pakravan تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم

purpose: to report a case of hypotonous maculopathy after blunt trauma and its treatment. patient and findings: a 34-year-old woman presented with decreased visual acuity in her left eye following blunt trauma. right eye examination was unremarkable, but visual acuity of left eye was counting fingers. slit lamp biomicroscopy of the left eye was within normal limits, but on funduscopy, papilloma...

Journal: :Journal of optometry 2016
Dmitry Domkin Hans O Richter Christina Zetterlund Lars-Olov Lundqvist

PURPOSE We intended to assess consequences of reduced visual acuity for performance in a natural simple motor task (tracing) using objective kinematic performance measures. Specifically, we intended to elucidate the kind of relationship between the task performance and best corrected binocular visual acuity and to determine the threshold of visual acuity when task performance starts to deterior...

2011
Béatrice Cochener Antoine Lafuma Babak Khoshnood Laurène Courouve Gilles Berdeaux

PURPOSE To compare the clinical outcome of different multifocal intraocular lenses (IOLs) based on information reported in the international literature. METHODS All comparative clinical trials that involved implanting at least one multifocal IOL in patients with cataract or presbyopia were extracted from the literature. Clinical outcomes included uncorrected near visual acuity, uncorrected di...

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